- Voice Actor (CV)
- You Taichi
- Gender
- Female
- Age
- 14-
- Birthday
- April 4
- Role
- Protagonist
- Identity
- Third-year student at Fujisaki Girls' Middle School, serving as the Student Council Treasurer
Personality
Unflappable
Sharp-tongued
Financially savvy
Mature and perceptive
Sayori Mizushima is a third-year student at Fujisaki Girls' Middle School and the official treasurer of the student council. Known for her unshakeable composure and razor-sharp wit, she has earned the nickname 'penny-pincher' among her peers due to her intense attachment to money. As the most emotionally mature member of the council—and the only one with a boyfriend—she consistently cuts through her friends' outlandish romance experiments with incisive commentary, cementing her role as both the group's strategist and its resident voice of reason.